Zonal Lumen Table

The Zonal Lumen Table summarizes how much luminous flux is emitted into angular zones. A zone is a band of directions, commonly grouped by gamma angle or by upper and lower hemispheres.

The report integrates luminous intensity over solid angle. Each cell is a lumen contribution from the selected angular band, so the table shows where the luminaire sends its flux rather than only where the peak intensity occurs.

Reading The Table

Large values in low gamma zones indicate forward/downward concentration near nadir. Large values at high gamma angles indicate wide or upward distribution. Compare zones when checking uplight, glare risk, roadway distribution shape, or general beam spread.

Practical Use

Use the Zonal Lumen Table to understand the energy balance of a photometry. It is useful together with the polar view: the polar plot shows the shape, while the zonal table shows how much flux is assigned to each angular region.